Subaru XT 1988 Service Manual page 201

"""'----v
blocks
Fig. 102
Crankpin
0.0.
Standard
44.995 - 45.010 mm
(1.7715 - 1.7720 in)
0.03 mm (0.0012 in) 44.965 - 44.980 mm
undersize (1.7703 - 1.7709 in)
0.05 mm (0.0020 in)
44.945 - 44.960 mm
undersize (1.7695 - 1.7701 in)
0.25 mm (0.0098 in) 44.745 - 44.760 mm
undersize (1.7616 - 1.7622 in)
Fig. 103
ENGINE 2-3
3) Inspect the crank journal and crankpin for wear. If not to
specifications, replace bearing with an undersize one, and
replace or recondition crankshaft as necessary. When grinding
crank journal or crankpin, finish them to the specified dImen-
sions according to the undersize bearing to be used.
Crankpin and crank journal:
Out-of-roundness
0.03 mm (0.0012 in) or less
Taper limit
0.07 mm (0.0028 in)
Grinding limit
L2-169
0.25 mm (0.0098 in)
Crank journal
0.0.
Front Center
54.957 - 54.972 mm 54.954 - 54.970 mm
(2.1637 - 2.1642 in) (2.1635 - 2.1642 in)
54.927 - 54.942 mm 54.924 - 54.940 mm
(2.1625 - 2.1631 in) (2.1624 - 2.1630 in)
54.907 - 54.922 mm 54.904 - 54.920 mm
(2.1617 - 2.1623 in) (2.1616 - 2.1622 in)
54.707 - 54.722 mm
54.704 - 54.720 mm
(2.1538 - 2.1544 in) (2.1537 - 2.1543 in)
L2-170
Fig. 104
Rear
54.955 - 54.970 mm
(2.1636 - 2.1642 in)
54.925 - 54.940 mm
(2.1624 - 2.1630 in)
54.905 - 54.920 mm
(2.1616 - 2.1622 in)
54.705 - 54.720 mm
(2.1537 - 2.1543 in)
Thickness gauge
L2-480
4)
Measure the thrust clearance of crankshaft at center
bearing. If the clearance exceeds the limit, replace bearing.
Crankshaft thrust clearance
Standard
0.010 - 0.095 mm (0.0004 - 0.0037 in)
Limit
0.3 mm (0.0118 in)
45
5) Inspect individual crankshaft bearings for signs of flaking,
seizure, melting, and wear.
6) Measure the oil clearance on each crankshaft bearing by
means of plastigauge as follows:
(1) Wipe off oil, dust, etc. on the surfaces to be measured.
(2)
Install bearings in crankcase and set crankshaft in
position.